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Cholangitis Induced by Immune Checkpoint Inhibitors: Analysis of Pharmacovigilance Data
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Edité par CCSD ; WB Saunders -
International audience. Immune checkpoint inhibitors (ICIs) are remarkable anticancer therapies that have revolutionized the oncological prognosis of many cancers.1 The considerable efficacy of ICIs is associated with the onset of more- or less-serious, immune-related adverse effects (irAEs) affecting several organs, which can concern up to 70% of patients, owing to a loss of self-tolerance during the restoration of antitumor immunity.2 Checkpoint inhibitor-induced liver injury (CHILI), which may occur in up to 25% of patients, is treated with steroids as first-line treatment, and immunosuppressive drugs as second-line treatment.3 Recently, ICI-induced cholangitis was described as an emerging irAE. Hence, Pi et al4 reviewed all 53 published cases of ICI-induced cholangitis and compared the different types of bile duct involvement. We recently described CHILI according to the biological profile: cholestatic, hepatocellular, or mixed.5 Cholestatic profiles were associated with macroscopic and/or microscopic bile duct damage, and time to resolution was significantly longer. More recently, Onoyama et al6 and Parlati et al7 described a poorer response to steroids in cases of biliary histologic damage or ICI-induced sclerosing cholangitis. The latest European Society for Medical Oncology guidelines include the management of cholangitis, which is succinct and still poorly documented.3 The aim of this study therefore was to analyze the cases of ICI-induced cholangitis reported in the French pharmacovigilance system to describe their clinical characteristics, evolution, and outcome.
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